Float-valve.



R. H. GANFIELD.

FLOAT VALVE.

APPLIUATION FILED MAY 25, 1911.

Patented Oct. 1

z SHEETS-SHEET 1.

R. H. GANFIELD.

FLOAT VALVE.

APPLIOATION FILED MAY 25, 1911.

Patented 0G13. 1, 1912.

2 SHEBTS-SHEET z.

JTFAR 6 Ire/Ue coLUMBIA FLANunRAPH co.. WASHINGToN. u. c.

UNITED STATES PATENT oEEIoE. ,1,

ROY H.`CANFIELD, 0F LOS; ANGELES,CALIFORNIA.

FLOAT-vALvEL Specification of Letters Patent.

To all whom fit may concern.

Be it known that I, ROY HARRISON CAN FIELD, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Float-Valve, of which the following is a specification. i

This invention relates to a float valve adapted for use in direct high and low pres-I sure Hush tanks.

Objects of this invention are z-to provide means for operating the supply valve withgreat power from the float so as to positively shut off water under high pressure; to dispense with the usual long float lever and to make the action of the valve operat ing devices direct and free Jfrom vibration and lateral movement and side strain, and

also to minimize the friction of parts during the flushing operation; and to make the supply valve more readily accessible and to reduce the number of parts to be removed in the operation of repairing the valve.

Another object is to so construct the Hush tank that the supply valve will be closed quickly and the closing action will not begin until the water has nearly reached the normal water level in the tank, thusx minimizing the time required to reiill the tank and avoiding the noise usually caused by the Slowclosing valve.

The accompanying drawings illustrate the i the float from the normal position tothe Fig. 2 is a view flush starting position. analogous to Fig; 1showing the position of parts at the startingof the Siphon. Fig. 3 is a view analogous toFigs. 1 and 2, showing the Siphon breaking position. Fig. 4 is an enlarged sectional detail of the open supply valve. Fig, 5 is a perspective detail of lthe link attachment for the iioat. Fig. 6 is a section elevation from linea",

Figs 1 and 7, the Siphon beingysectioned on an axial plane. Fig. 7 isa plan View of" the form shown inFigs. 1, 2, 3 and 6m Fig.y

8 is a fragmentalY sectional elevation Ofanother form in which the invention may be' embodied.

The reservoir 1 is of the usuall construe i tion'of Hush tankreservoirs and the Siphon 2 corresponds with the usual Siphon excepting that it "is fixed tothe reservoir floor 1. being provided on top ofthe floor Vwith a collar 3 to fit on the Hoor', and also providedr below the floor with` a threaded extension Patented 0015.151912; Applicationled Mayv25,1`911. Serial No. 629,509.

4 on which are screwed the lock nutl 5 and the coupling 6 by which connection` is 'made with the'iush pipe 7.

The supply' valve S has an L-shaped body 8 providedwith a collar 9 to fit on the reservoir floor and with an extensionl() projectingl through the floor and there screw- -threaded to receive the lock-nut 11 to fix the valve body to the floor and to also receives" the coupling 12 by whichconnection is made with the supply pipe 13.` The horizontal `limb of Said'valve body is an open cylinder forming a valve way 14 and is provided on its underside with a lateral slot 15 forming" the supplyjoutlet from the valve, andiS prvlded internally withy a valve seat 16 close to the slot and between it and the supply pipe.

The valvebody is provided at its opposite ends above the collar 9 wit-h fulcrum' brackets 17,118, to which are respectively fulcrumed by pins 19 and 2O the direct and auxiliary valve levers 21, 22, that are connectedb'y a rod 23 which is pivoted to the direct leverl` 21 abovethe fulcrum 19 and to the auxiliary lever below'the fulcrum 20. The fulcrum pms 19 and 2O are d'etachably fheld by thumb nuts 19 and 20. The upper ends of .the levers 21, 22 are connected by operating arms with each other and with a float 4which may be. of any suitable form. The lower end of the direct lever 21 is longitudinally slotted and kis detachably con nected by a pivot Ipin 25` in the slot 26 with the stem 27.0 `the supply valve plug 28` which works in! the valve way 14 across the slot lato enter and withdraw from the seat 16 to Yclose and openthe valve toprevent andto allow fluid to enter the' reservoir.

In the fornrshown in Figs. 1, 2, 3 and 6, t-he arms 30 are pivotally connected `at their `inner ends by the pin 31 rwith the forked ioaty stem 32 which extends up# wardly from the lfloat 24, and said arms' are provided at their outer ends with bent slots 'havingvh'orizontal and upright limbs' 33," 33" into which pins 34 extend tov pivotally co'n'y I nec't the arms with the tops ofthe 'levers 21,

22, respectively. rFhe bentv slots form waysV for the pins 34. to work in.

To the top of the arms'29, 30, the flushing lever 35 is pivotally connected by swinging connections 36 which are hooked into holes 37, 38 in the flushing lever and in the bent arms respectively, so that when the flushing lever which is fulcrumed at 39 to the side of the tank is operated by thechain 40 fastened to the lever 35 outside of the tank in the usual manner, the arms will be drawn upward. I The result of this movement which is indicated in Fig. 1 `is that the horizontal limbs of the bent slots are brought into line with the pins 34 and thereupon the pressure of the water on the valve 23 moves. the valve outward past the slot 15, thus allowing water to flow into the tank, thereby raising VVthe water level from the normal level a to the Vsiphon starting level l), whereupon the Siphon is brought into action and the water discharges from the tank through the siplion in the usual'manner until the siphon break-- and the chain 40 having been released andI theA float valve 24 restored-to the normal position the flush tank is atrest.

rBhe flushing lever 35 is preferably forked, as shown in Fig. 7 and the loose connections 36v are fastened to the ends of the arms of the fork.

In the form shown in Fig. 8, the float 37 is pivotally connected by the pin 38 with the arms 39 which Vare pivot-ally connected by the pins 40-with the tops of the levers 21, 22, and it is evident that when the float is lifted by the liquid to the normal level d, thus bringingthe arms 39 to horizontal position, the valve will be closed. Thejoint between the Aarms 29, 30 in the form shown in Fig. l and the joint between the arms 39 inthe form shown in F ig, S are provided with a stop 41 in the -forin of a finger rigidly projecting from the arm 30 in Figs. 1, 2, 3 and 5 and from one of the arms 39 in Fig. 3 to engage thevother arm, in eachrcase to 4 preventv the joint from bending upward, so

that when the float 24 or 37 as the case may' be has brought the arms into alinement as in Figs. 1, 2, 5 and 8, the float will no longerv rise without bodily'lifting both arms. y

Referring now to Fig. 1 it will be noted that when the normal level a has been reached by the water in the reservoir the mainL bodiesA of the lever arms will extend in aghorizontal right line and the pivots34 will be'moved away from each other so as to hold the direct and auxiliary levers iu 'is practically the saine as that described for Fig. 1, but no further movement of tbc valve can be effected after the lever arms 39 are alined, except by pushing the float 37y down or by starting the siphoii, not shown, and allowing the Vwater level to fall; whereupon the valve will be opened as indicated in dotted lines.

ln the forni shown in Figs. 1, 2, 3 and 5 the bent slots comprising the longitudinal limbs 33, the perpendicular limbs 33 and the bends 33 allow movement of the pivot pins 34 toward and from the float. Vhen the float is lowered by the escape of water from the reservoir as indicated in Fig. 3, the weight of the float brings the reservoir arms 29 and 30 into position with theupper ends of the vertical limbs 33 resting on the pivots 34, consequently drawing and holding the upper ends of the levers 21, 22 to ward each other. As the float rises upon the influx of water through the valve, the position of parts shown in Fig. l is reached, the outer ends of the lever arms 29 and 3() being still supported by the upper ends of the slots 33 resting upon the pins 34, which are thereby held apartI to close the valve.v

From this position the arms will be lifted when the flushing. handle 40', shown in Fig. 6, is pulled down; and when the lever arms have thus been lifted to the position shown in dotted lines in Fig. 1 the bend 33. and the force of the water pressure againstv the valve plug immediatelyoperates to force the pins 34 into the horizontal slot limbs 33 and such limbs serve as release devices to release the upperv ends of said levers to allow them to approach each other, and as Vsuch ends move toward each other, the valve provided for holdingthe valve closed. Such' lever in the form shown in Fig. 3 consists of the direct lever 2l, the auxiliary lever 22, connecting rod 23 and the lever rarms 39, allconnected with the pivots as shown, so .that upward movement on the lfloat from the dotted position effects great closing pressure upon the valve plug. In the formshown in Figs. 1, 2, 3 and 5, the compoundlever comprises thelevers 21, 22,

connecting rod 23 and the slottedlever arms 29, 30, all pivotally connected ,and supported with the pivot pins as shown, so

that not only is the valve closed bygreat pressure but the valve may readily opened by slightly lifting-the lever arms,

It is understood that the pointl on0 they, lever 21 at which the connecting rod 23 is pivoted is not arbitrarily ixed and that the further from the fulcrum pin 19 the pivot 23 is placed the greater will be the leverage to close the valve. It is also understood that the operation of the flush tank sho-wn in Figs. 1, 2, 3 and 5 depends upon the provision of means whereby the lever arms 29, 30 may operate to move and hold the upper ends of the levers apart while the lever arms are below a determined level and will operate when the arms are at a higher level, to release the levers so that the valve may open and that this is accomplished by the bent slots that form the ways for the pins 34. I regard such a contrivance to be broadly new.

I claim 1. The combination with a reservoir, of a supply valve body having a valve seat and an outlet, a valve plug to close the seat, two pivoted levers connected together one being connected with the valve plug, a ioat, and arms connecting the float with the levers to operate said levers, said arms being adapted to come into alinement with each other and. said valve being arranged to close when the arms are alined.

2. The combination with a reservoir, of a supplyvalve body having a valve seat, a valve plug to close the seat, two pivoted levers connected together one being connected with the valve plug, a float, and lever arms and pivots connecting the float with said levers to operate the levers to open and close the valve; said arms being provided with bent slots having upright and horizontal arms for the pivots which connect the arms and their levers.

3. The combination with a supply valve, of two pivoted levers, one of which is connected below its fulcrum with the valve to open and close it, a connecting rod connecting one of the levers above its fulcrum with the other lever below its fulcrum, arms pivotally connected respectively with the levers above their fulcrums, a Yiioat, and means pivotally connecting the arms and the float being connected Awith the valve plug, a Hoatj, and arms connecting the float with the levers to `operate the sametoopen `and close the valve,.i said. valvel.being arranged to close when the arms are alined and to open, when the arms are notalined, and thejoint be'-V tween the arms being provided with aA stop to prevent the joint from bending up.

y 5, The combination with a Isupply valve,VVA of' two pivoted levers, one of which is connected lbelow its fnlcrum with the valvey to open and close the valve, a connecting rod connecting the first lever above its ulcrum with the second lever below the fulc'rum of the second lever, arms pivotally connected respectively with the levers above their fulcrums, a float, and means pivotally connecting the arms and the Hoat between the levers to draw the upper ends of the levers toward each other to open the valve as the float falls and to close the valve on the upward movement of the float, and means to move the arms to open the valve.

6. The combination with v a valve body having a valve seat, a valve way, a lateral outlet from the valve way near the valve seat, and also having ulcrum brackets spaced apart and alined with the valve-way, of a direct valve lever fulcrumed to one of said brackets, a valve plug pivotally connected with said direct valve lever below its fulcrum and adapted to close said valve seat, an auxiliary lever fulcrumed to the other bracket` a connecting rod pivotally connected with the direct valve lever above its fulcrum and with the auxiliary lever below its fulcrum, a float, and lever arms pivotal ly connected to the float and pivotally connected respectively with the upper ends ofA said levers. i 1

7-. The combinationV with a valve body having a valve seat, a valve way, a lateral outlet from the valve way near the valve seat, and also having fulcrum brackets spaced apart and alined with the valve-Way, of a direct valve lever fulcrumed to one of said brackets, a valve plug pivot-ally connected with said direct valve lever 'below its ulcrum and adapted to close said valve seat, an auxiliary lever" fulcrumed to the other bracket, a connecting rod pivotally connected withy the direct valve lever above its fulcrum and with the auxiliary lever below its fulcrum, a oat, and lever arms pivotally connected to the float and pivvided; with bent?A waysz in which the Lpivots for.,I said: upper-ends of".4 the levers may move;

`8lV A valve, levers-connected to operatethe valve, a float and-means-connecting the floatl withfthe free :ends of they levers to -foroe tsuch ends,- apart as the iioatrisesto a determined level'toclose thevalve;

9; A valve, levers conne'ctedto-operate thel valve, a lioat` and means connecting' the float: with the ree'ends of the levers to force such ends apart as the float. rises fto-a determined level to elosethevalve,1 said meanseomprfisingfarelease device to allow said ends to approach eachother when the float reaches a higherrlevel: v

copiesl of tiiispatenrmay be obtained for mamma ROY H CANFIELD.

In presence of- JAMES R. ToWNsnND, L.- BELLE RICE.

five cents each', by addressing the Commissioner ofPatents, Washington, D. CL 

